KR101517777B1 - Multi band dipole antenna system - Google Patents
Multi band dipole antenna system Download PDFInfo
- Publication number
- KR101517777B1 KR101517777B1 KR1020140011274A KR20140011274A KR101517777B1 KR 101517777 B1 KR101517777 B1 KR 101517777B1 KR 1020140011274 A KR1020140011274 A KR 1020140011274A KR 20140011274 A KR20140011274 A KR 20140011274A KR 101517777 B1 KR101517777 B1 KR 101517777B1
- Authority
- KR
- South Korea
- Prior art keywords
- frequency band
- low frequency
- dipole
- dipole antenna
- high frequency
- Prior art date
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q19/00—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
- H01Q19/10—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces
- H01Q19/12—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces wherein the surfaces are concave
- H01Q19/17—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces wherein the surfaces are concave the primary radiating source comprising two or more radiating elements
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/06—Arrays of individually energised antenna units similarly polarised and spaced apart
- H01Q21/061—Two dimensional planar arrays
- H01Q21/062—Two dimensional planar arrays using dipole aerials
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/30—Arrangements for providing operation on different wavebands
- H01Q5/307—Individual or coupled radiating elements, each element being fed in an unspecified way
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
- H01Q9/04—Resonant antennas
- H01Q9/16—Resonant antennas with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole
Landscapes
- Variable-Direction Aerials And Aerial Arrays (AREA)
- Aerials With Secondary Devices (AREA)
Abstract
The present invention provides a multi-band dipole antenna system capable of suppressing problems in grating lobes, squints, tracking, and the like even when a plurality of dipole antennas capable of covering triple-band or more are used together. A multi-band dipole antenna system according to the present invention includes a reflector, a plurality of low-frequency first dipole antennas having a rectangular ring shape, a plurality of low-frequency second dipole antennas having a rectangular ring shape, 1 dipole antenna of a high frequency band, and a plurality of second high frequency band dipole antennas of a disk shape. The first dipole antennas of the plurality of low frequency bands are arranged on the reflection plate, support the low frequency band, and the first contact portions are respectively formed at the center portion of the square sides. A plurality of second dipole antennas of a low frequency band are arranged on the reflector below the first dipole of the plurality of low frequency bands, and support the low frequency band, and the second contact portions are formed at the vertexes of the square. A plurality of dipole antennas of the first high frequency band are provided on the inner sides of the first dipole antennas of the plurality of low frequency bands and the reflector between the first dipole antennas of the plurality of low frequency bands and support the first high frequency band. The plurality of dipole antennas of the second high frequency band are provided on the inner sides of the second dipole antennas of the plurality of low frequency bands and on the reflector between the second dipole antennas of the plurality of low frequency bands and support the second high frequency band.
Description
The present invention relates to a dipole antenna system, and more particularly, to a multi-band dipole antenna system in which a plurality of low-frequency band dipole antennas and a plurality of high-frequency band dipole antennas are arranged to cover multi-band more than triple band.
As the spread of personal mobile phones, smartphones and tablet PCs are increasing, the usage of radio waves for calls and wireless internet is surging. Such a surge in usage causes a need for communication traffic, communication speed, and call quality in various environments.
Particularly, it is required to have a proper communication quality even in the indoor space of the building as well as in a shaded area where the distance from the existing base station and the mobile communication repeater is long or the propagation is not easily transmitted by the feature. In order to meet such needs, each communication company additionally installs a base station and a mobile communication repeater in the shaded area.
Meanwhile, an antenna is a main component of a base station and a mobile communication repeater. Antenna is a key device for transmitting and receiving radio waves. As mentioned above, it is required to be light and small in order to suitably apply to various and limited installation environments. In order to provide an antenna that is simple and easy to manufacture and maintain, it is required to design a proper form of a radiating element constituting an antenna, a function, a setting of a propagation direction, a circuit and a mechanism structure.
In addition, as mobile communication becomes more popular and wireless broadband data communication is activated, various frequency bands are made available frequency bands in order to secure a sufficient frequency band. The main frequency bands are low frequency band (698 ~ 960MHz) and high frequency band (1.71 ~ 2.17GHz or 2.3 ~ 2.7GHz). In addition, MIMO (Multiple Input Multiple Output) technology based on multiple antennas is an essential technology for increasing data transmission speed and is applied to recent mobile communication network systems such as LTE (Long Term Evolution) and Mobile WiMAX.
However, in order to support MIMO in various frequency bands, installation of a plurality of antennas increases the installation cost, and there is a shortage of tower space to install the antenna in the actual external environment. In addition, an increase in the cost of tower leasing and the efficiency of antenna management are also significant problems.
Therefore, there is an urgent need for a multi-band antenna system over a triple-band over a dual-band antenna system. The multi-band antenna system can minimize the increase of the installation space occupied by the antenna system by inserting the high-frequency band antenna in the installation space of the low frequency band antenna.
However, since a multi-band antenna system uses a plurality of dipole antennas that can cover multiple bands, problems may arise in grating lobes, squints, tracking, and the like. This problem occurs because the low frequency band antenna affects the characteristics of the antenna in the high frequency band.
Accordingly, it is an object of the present invention to provide a multiband dipole antenna system capable of suppressing problems in grating lobes, squints, tracking, and the like even when a plurality of dipole antennas capable of covering multiple bands equal to or greater than triple bands are used together.
It is another object of the present invention to provide a multiband dipole antenna system including a plurality of dipole antennas that can minimize the influence of a change in characteristics of a plurality of high frequency band dipole antennas by a dipole antenna of a low frequency band.
In order to accomplish the above object, the present invention provides a dipole antenna comprising: a reflection plate, a plurality of low-frequency first dipole antennas having a rectangular ring shape, a plurality of low-frequency second dipole antennas having a rectangular ring shape, A dipole antenna of one high frequency band, and a plurality of dipole antennas of a second high frequency band having a disk shape. The first dipole antennas of the plurality of low frequency bands are arranged on the reflection plate, support low frequency bands, and the first contact portions are formed respectively at the center portions of the square sides. The second dipole antennas of the plurality of low frequency bands are arranged on the reflection plate below the first dipole of the plurality of low frequency bands to support the low frequency bands and the second contact points are respectively formed at the vertexes of the square. Wherein the plurality of dipole antennas of the first high frequency band are installed on the inside of the first dipole antennas of the plurality of low frequency bands and on the reflection plate between the first dipole antennas of the plurality of low frequency bands, do. The dipole antennas of the plurality of second high frequency bands are disposed on the reflection plate between the inside of the second dipole antennas of the plurality of low frequency bands and the second dipole antennas of the plurality of low frequency bands, Support.
In the multi-band dipole antenna system according to the present invention, the first contact portions of the first dipole antenna of the low-frequency band may be formed at -45 degrees and -135 degrees from the center of the first dipole antenna of the low- have. And the second contact portions of the second dipole antenna of the low frequency band may be formed at -45 degrees and -135 degrees from the center of the second dipole antenna of the low frequency band, respectively.
In the multiband dipole antenna system according to the present invention, the first dipole antenna in the low frequency band may have a rhombic ring shape.
In the multiband dipole antenna system according to the present invention, the dipole antenna of the second high frequency band may be positioned between the first dipole antenna of the low frequency band and the second dipole antenna of the low frequency band.
In the multiband dipole antenna system according to the present invention, the first and second dipole antennas of the frequency bands may support a low frequency band of 698 to 960 MHz. The dipole antenna of the first high frequency band may support a first high frequency band of 1.71-2.17 GHz. The dipole antenna of the second high frequency band may support a second high frequency band of 2.3 to 2.7 GHz.
According to the present invention, a triple-band or more multiband dipole antenna system is implemented by matching dipole antennas of a low frequency band that meet the characteristics of a plurality of high frequency band dipole antennas, whereby a plurality of dipole antennas It is possible to suppress the occurrence of problems in the grating lobe, squint, tracking, and the like.
1 is a plan view showing a multi-band dipole antenna system according to an embodiment of the present invention.
2 is a plan view showing a multi-band dipole antenna system according to a first comparative example.
3 is a plan view showing a multi-band dipole antenna system according to a second comparative example.
4 is a graph showing horizontal pattern characteristics of the first high frequency band of Comparative Example 1. Fig.
5 is a graph showing horizontal pattern characteristics of the first high frequency band of Comparative Example 2. Fig.
FIG. 6 is a graph showing vertical pattern characteristics of the second high frequency band of Comparative Example 1. FIG.
7 is a graph showing vertical pattern characteristics of the second high frequency band of Comparative Example 2. FIG.
In the following description, only parts necessary for understanding embodiments of the present invention will be described, and descriptions of other parts will be omitted to the extent that they do not disturb the gist of the present invention.
The terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary meanings and the inventor is not limited to the meaning of the terms in order to describe his invention in the best way. It should be interpreted as meaning and concept consistent with the technical idea of the present invention. Therefore, the embodiments described in the present specification and the configurations shown in the drawings are merely preferred embodiments of the present invention, and are not intended to represent all of the technical ideas of the present invention, so that various equivalents And variations are possible.
Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
1 is a plan view showing a multi-band dipole antenna system according to an embodiment of the present invention.
Referring to FIG. 1, the multi-band
The multi-band
The
The
The
A plurality of
The plurality of
At this time, a plurality of
In the multi-band
For example, the difference in the number of the first and
In this case, the
As described above, the multi-band
In the present embodiment, the first and
2 is a plan view showing a multiband
Referring to FIG. 2, the multiband
3 is a plan view showing a multiband
Referring to FIG. 3, the multiband
The pattern characteristics of the first high frequency band of Comparative Example 1 and Comparative Example 2 are measured as shown in the graphs of FIGS. 4 and 5. 4 is a graph showing the horizontal pattern characteristic of the first high frequency band of Comparative Example 1. FIG. 5 is a graph showing horizontal pattern characteristics of the first high frequency band of Comparative Example 2. Fig.
Referring to Fig. 4, it can be confirmed that the first high frequency band squint and tracking are good in the first comparative example.
On the other hand, referring to FIG. 5, it can be seen that the second high-frequency band of the second comparative example deteriorates in comparison to the first comparative example.
This shows that the
The measurement of the vertical pattern of the second high frequency band of Comparative Example 1 and Comparative Example 2 is as shown in the graphs of FIGS. 6 and 7. 6 is a graph showing the vertical pattern characteristics of the second high frequency band of Comparative Example 1. FIG. 7 is a graph showing vertical pattern characteristics of the second high frequency band of Comparative Example 2. FIG.
Referring to FIG. 6, it can be seen that the grating lobe is increased in the second high frequency band in the first comparative example.
On the other hand, referring to FIG. 7, it can be seen that the grating lobe is reduced in the second high frequency band in the second comparative example.
That is, in the multiband
In the multiband
This shows that the
Therefore, the multi-band
It should be noted that the embodiments disclosed in the present specification and drawings are only illustrative of specific examples for the purpose of understanding, and are not intended to limit the scope of the present invention. It will be apparent to those skilled in the art that other modifications based on the technical idea of the present invention are possible in addition to the embodiments disclosed herein.
10: Reflector
20: a first dipole antenna in a low frequency band
21: First contact portions
23: radiation pattern of the first dipole antenna in the low frequency band
30: a first dipole antenna in a low frequency band
31: second contact portions
33: Second dipole antenna radiation pattern in the low frequency band
40: dipole antenna of the first high frequency band
41: first high frequency radiation pattern
50: dipole antenna of second high frequency band
51: second high frequency radiation pattern
100, 200, 300: Multi-band dipole antenna system
Claims (5)
A plurality of low-frequency first dipole antennas arranged on the reflection plate and supporting a low-frequency band, the first contact portions being each formed at a central portion of a square side, and having a rectangular ring shape;
A plurality of second low frequency bands having a rectangular ring shape and arranged on the reflection plate below the first dipole of the plurality of low frequency bands and supporting the low frequency bands and each of the second contact portions being formed at a vertex of a quadrangle, A dipole antenna;
A plurality of first dipole antennas provided on the reflection plate between the inside of the first dipole antennas of the plurality of low frequency bands and the first dipole antennas of the plurality of low frequency bands and supporting a first high frequency band, A dipole antenna of a high frequency band;
A plurality of second high frequencies, which are provided on the reflection plate between the inside of the second dipole antennas of the plurality of low frequency bands and the second dipole antennas of the plurality of low frequency bands and which support the second high frequency band, Band dipole antenna;
Band dipole antenna system.
The first contact portions of the first dipole antenna of the low frequency band are formed at positions of -45 degrees and -135 degrees from the center of the first dipole antenna of the low frequency band,
And the second contact portions of the second dipole antenna of the low frequency band are formed at -45 degrees and -135 degrees from the center of the second dipole antenna of the low frequency band, respectively.
Wherein the first dipole antenna of the low frequency band has a rhombic ring shape.
Wherein the dipole antenna of the second high frequency band is located between the first dipole antenna of the low frequency band and the second dipole antenna of the low frequency band.
The first and second dipole antennas of the low frequency band support a low frequency band of 698 to 960 MHz,
The dipole antenna of the first high frequency band supports a first high frequency band of 1.71-2.17 GHz,
Wherein the dipole antenna of the second high frequency band supports a second high frequency band of 2.3 to 2.7 GHz.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020140011274A KR101517777B1 (en) | 2014-01-29 | 2014-01-29 | Multi band dipole antenna system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020140011274A KR101517777B1 (en) | 2014-01-29 | 2014-01-29 | Multi band dipole antenna system |
Publications (1)
Publication Number | Publication Date |
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KR101517777B1 true KR101517777B1 (en) | 2015-05-07 |
Family
ID=53393891
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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KR1020140011274A KR101517777B1 (en) | 2014-01-29 | 2014-01-29 | Multi band dipole antenna system |
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KR (1) | KR101517777B1 (en) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20100033888A (en) * | 2008-09-22 | 2010-03-31 | 주식회사 케이엠더블유 | Dual-band dual-polarized base station antenna for mobile communication |
KR20120086840A (en) * | 2011-01-27 | 2012-08-06 | 엘에스전선 주식회사 | Base station antenna structure having dual-band dipole element array |
KR20130060982A (en) * | 2011-11-30 | 2013-06-10 | 박진영 | Triple band dual polarization dipole antenna including balun based on printed circuit board |
-
2014
- 2014-01-29 KR KR1020140011274A patent/KR101517777B1/en not_active IP Right Cessation
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20100033888A (en) * | 2008-09-22 | 2010-03-31 | 주식회사 케이엠더블유 | Dual-band dual-polarized base station antenna for mobile communication |
KR20120086840A (en) * | 2011-01-27 | 2012-08-06 | 엘에스전선 주식회사 | Base station antenna structure having dual-band dipole element array |
KR20130060982A (en) * | 2011-11-30 | 2013-06-10 | 박진영 | Triple band dual polarization dipole antenna including balun based on printed circuit board |
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